Also known as UCMP V-2804; UCR RV-6304
Where: Esmeralda County, Nevada (38.0° N, 118.0° W: paleocoordinates 37.8° N, 113.9° W)
• coordinate estimated from map
• local area-level geographic resolution
When: Esmeralda Formation, Clarendonian (13.6 - 10.3 Ma)
• other than biochronology, there is no particular evidence for the stratigraphic position of this locality relative to the Stewart Spring and Cedar Mountain faunas
•dates of Evernden et al. 1964: KA 480 - 11.1 (= 11.39) Ma, 25' above micromammals KA 499 - 11.4 (= 11.70) Ma, just below micromammals
•average is 11.545 Ma
•these dates are not discussed by Perkins et al. 1998
Environment/lithology: terrestrial
Size classes: macrofossils, mesofossils
Reposited in the UCMP
• material from UCMP V-2804 collected by Annie Alexander and Louise Kellogg in 1925
Primary reference: J. R. Macdonald and W. J. Pelletier. 1958. The Pliocene mammalian faunas of Nevada, U.S.A. Paleontologia, taxonomia y evolucion. Cuidad de Mexico: International Geological Congress, 1956 Report of the 7th Session 7:365-388 [J. Alroy/J. Alroy]more details
Purpose of describing collection: general faunal/floral analysis
PaleoDB collection 18888: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Emmanuel Fara and Jonathan Marcot
Creative Commons license: CC BY (attribution)
Taxonomic list
Mammalia | |
? Pseudaelurus sp. Leidy 1858 cat | |
Leptarctinae indet.11 Gazin 1936 mustelid carnivore "Esmeralda beds... 7 1/2 miles north of Chiatovich Ranch, Fish Lake Valley"
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Hypohippus nevadensis n. sp.5, Pliohippus cf. tantalus, "Nannippus tehonensis" = Hipparion tehonense, Hippotherium sp.1
Hypohippus nevadensis n. sp.5 Merriam 1913 anchitheriine horse type of Merriam 1913 from UCMP loc. 2804
Pliohippus cf. tantalus Merriam 1913 horse
"Nannippus tehonensis" = Hipparion tehonense Merriam 1916 hipparionine horse | |
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"Prosthennops cf. niobrarensis" = Colbertchoerus niobrarensis12
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"Meterix latidens n. sp." = Plesiosorex latidens
"Meterix latidens n. sp." = Plesiosorex latidens Hall 1929 placental | |
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Metechinus nevadensis n. sp.
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"Eucastor dividerus n. sp." = Prodipoides dividerus
"Eucastor dividerus n. sp." = Prodipoides dividerus Stirton 1935 beaver from UCMP V-2804: see Stirton 1935
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"Perognathoides tertius n. sp." = Cupidinimus tertius, Perognathoides quartus n. sp., Diprionomys cf. parvus2
"Perognathoides tertius n. sp." = Cupidinimus tertius Hall 1930 rodent
Perognathoides quartus n. sp. Hall 1930 rodent | |
Copemys loxodon10 Cope 1874 mouse discusses continuing confusion among loxodon, longidens, kelloggae, and niobrariensis, all listed by Clark et al. 1964 except the last; loxodon is senior and is used tentatively
Peromyscus dentalis n. sp. Hall 1930 deer mouse | |
Macrognathomys nanus n. sp.
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Hesperolagomys galbreathi n. sp.2
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Amphibia | |
"Scaphiopus alexanderi n. sp." = Scaphiopus (Spea) alexanderi13
"Scaphiopus alexanderi n. sp." = Scaphiopus (Spea) alexanderi13 Zweifel 1956 spadefoot toad UCMP V-2804
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